( Reaffirmed 2006 )

IS:7534-1985

Indian Standard
SPECIFICATION FOR SLIDING LOCKING BOLTS FOR USE WITH PADLOCKS (
Builder's
Members SHRI SAHIB SINoH ( In the Chair )
SHRI

First Revision)
Sectional Committee,
Refmsenting M.

Hardware

BDC

15 Private Limited,
of

SHRI S. MOWJEE ( Alternate ) D. S. CHAUHAN

Mowjee & Company Calcutta
C. Industry ), New Delhi

Regional Testing Centre ( Northern)

( Ministry

SHRI A. K. DU~~AL ( Alternate ) CONTROLLER or STORES Ministry of Railways
S;$TEGETf&AILWAY )

National Test House, Calcutta SHRI A. K. SAREAR ( Alternate ) Central Building Research Institute ( CSIR ), SHRI S. K. GOSWAMI Roorkee Engineer-in-Chief's Branch,& Army Headquarters, SHRI P. D. GUJRATI New Delhi SHRI P. K. SETHI ( Alternate ) Ministry of Defence ( DGI ) SHBI N. C. JAIN SHRI D. D. GEOSH ( Alternate ) Directorate General of Supplies & Disposals, New SHRI S. C. KAPOOR Delhi SERI I. C. KHB;NNA ( AItcrnats ) Indian Institute of Architects, Bombay SHRI RAM F. KEWALRAMANI Argent Industries, New Delhi COL P. C. KHANNA MAJ-GEN K. D. CHADHA ( Alternate ) Indian Aluminium Co Ltd, Calcutta SHRI G. M. MENON SHRI V. RAA~ASWAMY ( Alternate ) Gobindo Sheet Metal Works & Foundry, Calcutta SHRI AJOYENDU PAUL SRRI AMITABH PAUL ( Alternate ) National Buildings Organization, New Delhi DR A. V. R. RAO SERI 0. P. RATRA ( Alternote ) REPRESENTATIVE Builder's Hardware Industries Association of India, Calcutta SRRI RAJ KUMAR SOOD Adarah Industries, Delhi SHIU NARE~DRA SOOD ( Alternate ) ( Continued on page 2 ) @ Copyrighr 1985 INDIAN STANDARDS INSTITUTION I

This publication is protected under the Indian Copyright Act ( XIV of 1957 ) and reproduction in whole or in part by any means except with written permission of the I oublisher shall be deemed to be an infringement of couvrinht under the said Act.

IS : 7534 - `1985 ( Continuedfrom page 1 )
Members Refiresrnting SUPEIIINTENDINQSURVIBYOROB Central Public Works Department, New Delhi WORIC3 1 ( DA2 1 SURVEYOR OB +ORRS ( Alternats ) SHRI M. S. VED~ Everite Sales Corporation, New Delhi Snrtr R. S. VEDI ( Alternate ) Director General, ISI ( Ex-o&o Member ) SHRI G. RAMAN, Director ( Civ Engg j Secretary Sftnr A. K. SAINI Assistant Director ( Civ Engg ), IS1

Door and Window
Members
Sam K. K. AIYPK.

Fittings

Subcommittee,

BDC 15 : 1

Engineer-in-Chief's Branch, Army Headquarters, New Delhi SH~I P. 13. KUMB IIARE ( Ahrnate ) Regional Testing Centre ( Northern ) ( Ministry of SHRI S. D. CHAUHAN Industrv j. New Delhi SHRI A. K. DUGGAL ( Alternate ) I Eastern Commercial & Industrial Enterprises Pvt SHRI JASWAYT SINQH Ltd, Vishakhapatnam SHRI RAVI METIRA ( Alternate J ' Jayna Trading Corporation, Delhi SUK[ RAKESIT KAMBOJ ' SHHI NAWAL KAMB~J ( Alternate ) Directorate General of Supplies & Disposals SHRI I. C. KHANN~ ( Ministry of Supply ), New Delhi Areent Industries. New Delhi COL P. C. KHANNA MU-GEN K. D. CEADHA ( Alter& ) Gobindo Sheet Metal Works & Foundry, Calcutta SHRI AJOYENDU PAUL SERI AM~TABH PKUL ( Alternate ) Ministry of Railways SHRI V. K. PUNJ M. C. Mowjee & Company Private Limited, SK&I SAHlB SINaH Calcutta SHRI S. MOWJEE ( Alternatr ) Central Public Works Department, New Delhi SUIlYEYOR OF WORlC3 ( DA2 ) Everite Sales Corporation, New Delhi SHRI M. S. VED~ SHBI R. S. VEIII ( Alternate )

2

IS:7534-1985

Indian Standard
SPECIFICATION FOR SLiDING LOCKING BOLTS FOR USE WITH PADLOCKS

( First Revision )
0. FOREWORD
0.1 This Indian Standard ( First Revision ) was adopted by the Indian Standards Institution on 15 March. 1985, after the draft finalized by the Builder's Hardware Sectional Committee had been -approved by the Civil Engineering Division Council. 0.2 Locking bolts are fastners like sliding door bolts for securing doors. Sliding door bolts with hasps and staples have been covered separately These locking bolts are type of sliding door bolts in in IS : 281-1973*. which the hasp and staple are omitted The bolt is locked either directly to the door frame or with a plate fixed at right angle to the bolt plate. These type of locking bolts are used in large numbers. 0.3 This standard was originally published in 1974. In the present The climenrevision locking bolt with curved plate has been included. sions of locking bolt with straight plate have been modified and use of aluminium in addition to mild steel has been permitted. 0.4 I?or the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960t. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

1. SCOPE
standard lays down the requirements regarding dimension, manufacture and finish of sliding locking bolts used for locking doors, gates, etc, with padlocks.
*Mild steel sliding door bolts for use with padlocks ( second revision ). ?Rules for rounding off numerical values (-revised ).

1.1 This

materials, commonly

3

LS : 7534 - 1985

2. LOCKING 2.1 These
Type Type

BOLTS

shall be of two types: I II with straight with curved locking locking plate, plate. and

3. SIZES 3.1 Locking
bolts shall be of 110, 150, 200, 250 and 300 mm size. by the length of bolt ( see Fig. I. and 2 ).

3.3.1 The size shall be denoted
3.2 Locking bolts supplied by mutual

of sizes other than those specified in 3.1 may also be agreement between the purchaser and the supplier.

4. MATERIAL 4.1 Materials
used for the manufacture with the requirements given in Table 1.
TABLE SL No. i) 1 REQUIREMENTS FOR

of locking

bolts shall comply

MATERIALS

FOR

LOCKING

BOLTS

PART Bolt plate and receiving plate

MATERIAL Mild steel sheet Aluminium sheet alloy

SUITABLE GRADE IN INDIAN STANDARD Grade O-1079 of IS : 1079-1973* IS Designation IS : 737-1974+ 52000 or 65032 of

ii)

Bolt

Mild steel rods Aluminium alloy extruded rod

Grade Fe 310-O of IS

: 1977-1975$

IS Designation 63400 WP or 65032 WP of IS : 733-19833

*Specification for hot rolled carbon steel sheet and strip ( third reuition ). tspecification for wrought aluminium and aluminium alloys, sheet and strip ( for genera1 engineering purposes ) ( second revision ). fspecification for structural steel ( ordinary quality ) ( second rauision ). $Specification for wrought aluminium and aluminium alloy bars, rods, and sections ( for genera1 engineering purposes ) ( third reuision ).

5. MANUFACTURE - The locking bolts shall have smooth sliding action. All edges and corners shall be removed and finished smooth. All screw holes shall be countersunk to suit the countersunk head wood screws ( see IS : 6760-1972" ) of sizes as specified in Table 2.
sharp *Specification for slotted countersunk head wood screws.

5.1 General

4

SECTION

XX

4
I50 _I. Y

FOR CARRIAGE

BOLT

L------B_
All dimensions in millimetres. Fro. 1 TYPICAL SKETCH OF LOCKING BOLT WITH STRAIGHT LOCKING PLATE ( T+PE I )

Tl'

IS : 7534 - 1985

All dimensions in millimetres. FIG.

2

SLIDING LOCKING BOLT WITH CURVED LOCKING PLATE ( TYPE II )

6

TABLE

2

DIMENSIONS

OF LOCKING

BOLT

( Clause 6.1 and Fig. 1 and 2 ) All dimensions in millimetres. TYPE REB SIZE LENGTH OF BOLT PLATE LENGTH OF BOLT DIA OF BOLT WIDTH OF BOLT PLATE THICKNESS OF BOLT PLATE THICKNESS STREW HOLES OF PLATE i----h__ CARRYING No. in Size HOLES FOR Plate DesigLOOEINQ and nation Locking ( see Plate 6;:O: 1972. ) Tr (9) Mild Steel: 2 f 810 Aluminium: 3 f 0.10 I 3 f 0.10 4 9 Mild Steel: 2 f 0'10 Aluminium: 3 f 0.10 (10) (11)

FTPO.

A (1) 4 I (2) 1 (3) 150 200 250 300 210 260 310 360 (4) -f f * f 1 1 1 1

B
(5) 150f2 200 f 250 f 300 f 1 2 2 I 2 J

D (6) 10 f 12'; 0.5 0'5 1 t J

E (7)

45&l

8

9

A

B
1 11052 10 f

D
0.5

II

2

110

65 f

*Specificatidn

for slotted countersunk head wood screws.

IS : 7534 - 1985 5.1.1 Bolt Plate - The bolt ptate shall be made from either mild steel or aluminium alloy sheets and shall be cut, bend to shape and finished smooth. 5.1.2 Bolt - Bolts shall be made from either mild steel or aluminium alloy rods and shall be cut, bent to shape and shall be firmly riveted or spot welded in the middle to restrict its movement. 6. DIMENSIONS AND TOLERANCES

6.1 The size and dimensions of the locking bolts and receiving plate shall conform to Table 2 read with Fig. 1, 2 and 3.

All dimensions in millimetres. NOTE 1 NOTE 2 Clear edge distance of holes = 5 mm, Min. Screw hole designation No. 9 ( see IS

: 6760-1972 ).

FIG. 3 7. FINISH

TYPICAL

SKETCH OF RECEIVING PLATE

7.1 Mild steel locking bolts shall be copper oxidized, electrogalvanized or stove enamelled black. Aluminium alloy bolt shall be anodized to a bright, natural mat or satin finish or dyed. The anodic coating shall not be less than Grade AC 10 of IS : 1868-1982" or as required by the purchaser. All bolts shall be finished bright. 8. MARKING 8.1 Each locking trade-mark.
*Specification

bolt shall be marked with the manufacturer's
( seconarevision ).

name or

for anodic coatings on aluminium

8

IS : 7534 - -1983 i 8.1.1 Locking
h/lark. iVoTE - The use of the ISI Certification Mark~is governed by the provisions of the Indian Standards Institution ( Certification Marks ) Act and the Rules and Regulations made thereunder. The ISI Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well-defined svstern of inspection, testing and quality control which is drvited and supervised by IS1 and operated by the producer. ISI marked products are also continuously checked by IS1 for conformity to that standard as a further safeguard. Details of conditions under which a licence for the use of the ISI Certitication Mark may be granted to manufacturers or processors, may he obtained from the Indian Standards Institution, bolt may also be marked with the

IS1 Certification

9, SAMPLING
9.1

AND

CRITERION

FOR

CONFORMITY

The method shall be as given

of selecting in Appenchx

locking A.

bolts and criterion

for conformity

AFPENDIX ( Clause 9.1 )
SAMPLING OF SLIDING WITHI LOCK(ING PADLOCKS

A

BOLTS

FOR

USE

A-l.

SCALE

OF

SAMPLING

all the locking bolts of the same size, A-l.1 Lot - In any consignment same type and manufactured at the same time shall be grouped together to constitute a lot.
A-l.2 For ascertaining the conformity of the lot to the requirements this specification, samples shall be tested from each lot separately. A-1.3 The number of locking bolts to be selected from depend on the size of the lot and shall be according to Table of

the lot shall

3.

A-1.3.1 These locking bolts shall be selected at random from at least 10 percent of the packages subject to a minimum of three packages, from each such package. equal number of lockin, u bolts being selected In order to ensure the randomness of selection, procedures given in IS : 4905-1968* may be followed.
*Methods for random sampling.

Ib &7534 - 1985
TABLE 3 SCALE OF SAMPLING AND E; UMBER OF DEFECTlVES ( Clause No.
OF LOCKING, l301.!t'S A- 1.3 SAXPLE SIZE

PERMISSIBLE

)
PXRBXISSIBLE

No.

IN TIIF: LOT

OF DEFECTIVES

(1)
up
151

(2)
150 13

(3)
0

to

to 300

20 32 50

1 2 3

301

to 500

501 and above

A-2. A-2.1

NUMBER

OF TESTS

AND

CRITERIA

FOR

CONFORMITY

All the locking bolts selected according to A-l.3 shall be examined for dimensional requirements ( see 6 ), defects in manufacture ( see 5 ) and finish ( see 7 ). Any locking bolts failing to satisfy one or more of these requirements shall be considered as defective.
A-2.2 The lot shall be considered as conforming to the requirements of this specification if the number of defectives found in the sample does not exceed the corresponding permissible number of defectives given in co1 3 of Table 3.
NOTE -For conformity of the requirements of the material specification, the manufacturer shall provide a test certificate.

given in 4 of the

10